Product Description:

The DMA 85B 5111-D is a drive electronics unit produced by Bosch Rexroth Indramat and supplied within the DMA Servo Drive Modules series. The module belongs to the modular Servodyn-D drive architecture and energizes three-phase synchronous or asynchronous motors in automated machinery. In an industrial cell, it functions as a power stage that accepts low-level motion commands from a higher-level controller and converts them into regulated current and voltage for a single motor axis. This arrangement allows the drive to support precise speed and position control without requiring a separate standalone power converter for the axis.

The drive provides one-axis positioning capability, so its embedded logic can execute indexed moves without an external motion card. Temperature is managed by backplane air cooling, with heat transferred through the rear panel into cabinet airflow to help reduce panel depth. Feedback arrives through a standard interface that accepts incremental or absolute encoder channels common to Rexroth motors, allowing direct connection without converter boards. Command and status wiring uses 24 V control signals, which are compatible with typical PLC I/O levels and isolated from the power section. The housing occupies 100 mm of rack width, which supports dense multi-axis arrangements while leaving room for supply and regeneration units.

As a three-phase module, the DMA 85B 5111-D distributes balanced line current to synchronous and asynchronous motors, which allows mixed motor families to operate on a shared DC bus. Its place in the Servodyn-D series means it is intended to work with the matching supply modules and backplane communicators used on that platform. The unit ships as the standard variant, so parameter memory, safety relays, and fieldbus slots follow the base catalog configuration. It can be used with matching motors and cables from the same drive platform.